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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright 2001-2004 The Apache Software Foundation.<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.apache.log4j.spi;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.apache.log4j.*;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.Enumeration;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>/**<a name="line.23"></a>
<span class="sourceLineNo">024</span> * A &lt;code&gt;LoggerRepository&lt;/code&gt; is used to create and retrieve<a name="line.24"></a>
<span class="sourceLineNo">025</span> * &lt;code&gt;Loggers&lt;/code&gt;. The relation between loggers in a repository<a name="line.25"></a>
<span class="sourceLineNo">026</span> * depends on the repository but typically loggers are arranged in a<a name="line.26"></a>
<span class="sourceLineNo">027</span> * named hierarchy.<a name="line.27"></a>
<span class="sourceLineNo">028</span> * &lt;p/&gt;<a name="line.28"></a>
<span class="sourceLineNo">029</span> * &lt;p&gt;In addition to the creational methods, a<a name="line.29"></a>
<span class="sourceLineNo">030</span> * &lt;code&gt;LoggerRepository&lt;/code&gt; can be queried for existing loggers,<a name="line.30"></a>
<span class="sourceLineNo">031</span> * can act as a point of registry for events related to loggers.<a name="line.31"></a>
<span class="sourceLineNo">032</span> *<a name="line.32"></a>
<span class="sourceLineNo">033</span> * @author Ceki G&amp;uuml;lc&amp;uuml;<a name="line.33"></a>
<span class="sourceLineNo">034</span> * @since 1.2<a name="line.34"></a>
<span class="sourceLineNo">035</span> */<a name="line.35"></a>
<span class="sourceLineNo">036</span>public interface LoggerRepository {<a name="line.36"></a>
<span class="sourceLineNo">037</span><a name="line.37"></a>
<span class="sourceLineNo">038</span>    /**<a name="line.38"></a>
<span class="sourceLineNo">039</span>     * Add a {@link HierarchyEventListener} event to the repository.<a name="line.39"></a>
<span class="sourceLineNo">040</span>     */<a name="line.40"></a>
<span class="sourceLineNo">041</span>    public void addHierarchyEventListener(HierarchyEventListener listener);<a name="line.41"></a>
<span class="sourceLineNo">042</span><a name="line.42"></a>
<span class="sourceLineNo">043</span>    /**<a name="line.43"></a>
<span class="sourceLineNo">044</span>     * Returns whether this repository is disabled for a given<a name="line.44"></a>
<span class="sourceLineNo">045</span>     * level. The answer depends on the repository threshold and the<a name="line.45"></a>
<span class="sourceLineNo">046</span>     * &lt;code&gt;level&lt;/code&gt; parameter. See also {@link #setThreshold}<a name="line.46"></a>
<span class="sourceLineNo">047</span>     * method.<a name="line.47"></a>
<span class="sourceLineNo">048</span>     */<a name="line.48"></a>
<span class="sourceLineNo">049</span>    boolean isDisabled(int level);<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>    /**<a name="line.51"></a>
<span class="sourceLineNo">052</span>     * Set the repository-wide threshold. All logging requests below the<a name="line.52"></a>
<span class="sourceLineNo">053</span>     * threshold are immediately dropped. By default, the threshold is<a name="line.53"></a>
<span class="sourceLineNo">054</span>     * set to &lt;code&gt;Level.ALL&lt;/code&gt; which has the lowest possible rank.<a name="line.54"></a>
<span class="sourceLineNo">055</span>     */<a name="line.55"></a>
<span class="sourceLineNo">056</span>    public void setThreshold(Level level);<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span>    /**<a name="line.58"></a>
<span class="sourceLineNo">059</span>     * Another form of {@link #setThreshold(Level)} accepting a string<a name="line.59"></a>
<span class="sourceLineNo">060</span>     * parameter instead of a &lt;code&gt;Level&lt;/code&gt;.<a name="line.60"></a>
<span class="sourceLineNo">061</span>     */<a name="line.61"></a>
<span class="sourceLineNo">062</span>    public void setThreshold(String val);<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span>    public void emitNoAppenderWarning(Category cat);<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span>    /**<a name="line.66"></a>
<span class="sourceLineNo">067</span>     * Get the repository-wide threshold. See {@link<a name="line.67"></a>
<span class="sourceLineNo">068</span>     * #setThreshold(Level)} for an explanation.<a name="line.68"></a>
<span class="sourceLineNo">069</span>     */<a name="line.69"></a>
<span class="sourceLineNo">070</span>    public Level getThreshold();<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span>    public Logger getLogger(String name);<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span>    public Logger getLogger(String name, LoggerFactory factory);<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span>    public Logger getRootLogger();<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span>    public abstract Logger exists(String name);<a name="line.78"></a>
<span class="sourceLineNo">079</span><a name="line.79"></a>
<span class="sourceLineNo">080</span>    public abstract void shutdown();<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>    @SuppressWarnings("rawtypes")<a name="line.82"></a>
<span class="sourceLineNo">083</span>    public Enumeration getCurrentLoggers();<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>    /**<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * Deprecated. Please use {@link #getCurrentLoggers} instead.<a name="line.86"></a>
<span class="sourceLineNo">087</span>     */<a name="line.87"></a>
<span class="sourceLineNo">088</span>    @SuppressWarnings("rawtypes")<a name="line.88"></a>
<span class="sourceLineNo">089</span>    public Enumeration getCurrentCategories();<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
<span class="sourceLineNo">091</span>    public abstract void fireAddAppenderEvent(Category logger, Appender appender);<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span>    public abstract void resetConfiguration();<a name="line.93"></a>
<span class="sourceLineNo">094</span><a name="line.94"></a>
<span class="sourceLineNo">095</span>}<a name="line.95"></a>




























































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